Improvement in materials for chair-seats



D. H. DONOVAN.

MATERIAL FOR CHAIR-SEATS.

Patented Nov.2, 1875.

/J//// VIII N. PETERS. FHOTO-LITIIOGRAPHER WASHlNGTON, n L

UNITED STATES PATENT OFFICE.

DAVID H. DONOVAN, OF BAYONNE, NEW JERSEY.

IMPROVEMENT IN MATERIALS FOR CHAIR-SEATS.

Specification forming part of Letters Patent N 0. 1 69,528, datedNovember 2, 1575; application filed September 27, 1873.

To all whom it may concern:

Be it known that 1, DAVID HOWARD DON- OVAN, of Bayonne, county ofHudson, State of New Jersey, have invented a Material for Chair-Seatsand other purposes, of which the following is a specification:

The object of my invention is a cheap and appropriate material for theseats and backs of chairs, &c., the said material consisting of one ormore veneers cemented to asheet or sheets of leather-board, andpossessing such flexibility, toughness, and other advantageousproperties as to render it especially applicable to the above purpose.

The leather-board which I employ is a wellknown article of commerce, andis manufac between two veneers, b b, as illustrated inthe accompanyingdrawing, or one on each side of a single veneer, or the veneers andboards arranged alternately to form a sheet of any desired thickness,after which the compound sheet is submitted to heavy pressure until thecement is dry. The compound material thus made is so flexible that itcan be bent without dies to. form the continuous seat and back of achair, while the leather board imparts a toughness and strength to thematerial which united veneers do not of themselves possess.

One of the chief advantages of the new material results from theabsorption of a portion of the cement by the leather-board, and theconsequent effective union of the latter with the veneers.This'absorption of the cement, together with the impervious andwater-repellent nature of the leather-board, tends to prevent thewarping of the veneers.

It will be apparent that the improved material may be employed withadvantage in many places where light, tough, durable, and flexiblesheets are needed to replace'canvas, leather, cane seats, 85c.

I am aware that paper and textile fabrics have been used in combinationwith veneers for the manufacture of materials for car-seats, &c., and Ido not claim, broadly, the combination of veneers and intervening orcovering sheets of any material; but

I claim As a new article of manufacture, a material for chair-seats andother purposes, consisting of a veneer or veneers cemented to one ormore sheets of leather-board, as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

D. HOWARD DONOVAN.

Witnesses: CHARLES E. FOSTER, Enn. F. BROWN.

